any home remedy for tooth discoloration?

ADAMosman

Australia

4 years ago

years after my root canal my teeth became yellowish..you can see the difference between the other teeth..i smoke and i love coffee so much and it temporarily stains my teeth, so, i decided to have it whiten. now i have to go back cause it's starting to turn yellow again..what home remedy can i use so i won't have to go to my dentist again and again to have my teeth whiten?